Automobile radiator



Oct, 13, 1931. A. DON/w10 AUTOMOBILE RADIATOR Filed Nov. 14. 1929 .2 sheets-sheer 1 wg mullll'l' llll/A umm i yl/1111111111 l wmllllim '//MIHIHII Oct. 1,3, 1931. A. DONADJO 1,827,568

i AUTOMOBILE RADIATOR Filed Nov. 14. 1929 2 Sheets-Sheer 2 @faz l aww/nto@ Patented Qct. 13, 1931 PATENT OFI-ICE MERICO DONADIO, OF ROME, ITALY AUTOMOBILE RADIATOR VApplication led November 14, 1929. Serial No. 407,195.

This invention relates to improvements in automobile radiators ofthe type employed in the cooling system thereof.

The primary object of this invention is to VI provide a plurality of removable and interchangeable cooling chambers or tube sections adapted to be independently shut 0H from the cooling system. Y y A still further object of this invention is to provide a device of the above mentioned character having an upper water' tank and a lower water tank both of which are adapted for connection with an internal combustion Y v engine cooling system and a plurality independent water cooling tubes extending between the upper and lower water tanks whereby upon operation of one or more valvesinterposed between the water tanks and cooling tubes, one or more cooling tubes 520i may be shut off from the circuit.

A still further object of this invention is to provide a novel formof valve for accommodating .the structure of .the water cooling tanksfwliich usually are not very large and provide little space for valves or other mechanism. A

Heretofore it has been common practice to provide weather shutters and other devices to cover the cooling portion of an automobile radiator in an endeavor to decrease or increase during different elimatical temperaturesfthe efficiency of the lradiator thereby enabling the motor ofthe vehicle to function more properly.

Such practice is objectionable in many respects, namely, that the shutters are frequently, through negligence or carelessness failed to be operated or opened to give the motor sufficient cooling medium which results *4Q in scoring of the cylinder walls kof the engine and over boiling.

A rfurther salient feature of this invention is the .manner in which the valves are ar- A ranged in order to cutoff a section of the .'45 cooling tubes should a leak be caused therein through accident. or vibration of the motor causing the usual cooling tubes to be defective.

Other objects .and advantages of this in- '50 vention will .become apparent 'during the course of the following description forming a part of this specification and in which,

Figure 1 is a rear elevational view of the invention showing the verticalindependent cooling sections;

Figure 2 is a sectional view taken on line Q-Q of Figure 1 showing the upper and'lower water tanks and the arrangement of the valves which are provided for each radiator tube section;

Figure 3 is a top elevational view of one of the cont-rolling valves used Yinthe water tanks for controlling the flow of water therethrough;

Figure 4 is a cross-sectional view of the same showing the lconstruction of the valve and its relative parts;

Figure 5 is a fragmentary view partly in section, showing the rotary-plug of one ofthe valves and its relation ing;

Figure 6 is an end elevational View of the valve showing the feed tube in section;

Figure 7 is a transverse crosssectional view of the valve showing the bore of the rotary plug in alignment with the side port of the valve casing;

Figure S is a rear elevational view similar to Figure 1 showing a modified form ofthe invention; f

Figure 9 is a cross-sectional view on line 9-9 of Figure 8, showing the modified forni of arranging the valves;

Figure 10 is a top plan view of one of the valves used in the modified construction;

Figure 11 is a cross-sectional View of the same showing the valve casing interior and the rotary plug therein;

tion;

Figure 13 is an end elevational view of the valve; and

Figure 14 is a transverse cross-sectional view lof the modified valve showing the communicating portsof the valve and valve casing.

In the drawings, ywherein in Figures 1 to 7 inclusive is shown a preferred example of the invention, the numeral 5 will generally to the valve icas- 'y Figure 12 is a similar view partly in s eco be used to designate the frame of a vehicle cooling radiator core having an upper water tank 6 anda lower tank 7. The upper water tank 6 is provided with a filling spout 8 andV al water inlet pipe 9 that is in communication with the water jacket or cooling chamber of an internal` combustion engine, through the medium of the usual hosev connection. The lower water tank 7 is provided with an v outlet 10 for connection to the lower portion 0f the cooling chamber ofthe-engine. n

The upper and lower water tanks and 7 are connected by a lseries of independent and removable heat exchange sections 11 comprising vertical water tubes having heat radiating fins thereon. Y Arotajry valve is arrangedv at each vendL oit' the several-heat exchange tubes 11 for controlling the flow of water or other cooling medium from' the upper tank 6 to the lower tank 7, the upper valve being mounted in the compartment :13 while the lower valve islocated inl the tank 7.k Each' valve co1nprisesarcasing,14suitably anchored in positionv relative tothe water tanks 6 and 7 byv welding, soldering or the like. A Vside port 15; is formed in 'each valve casing 14, the

'valve casi-nginfthe compartment y13 having its side port registering withan opening in the Vflower side of theuppertank 6, while the valve casing 14 in thelower tank 7 has the side port thereof directed downwardly andl spaced' from the upper wallof the lower tank 7 and the bottom wall ofthe tube section 11. Each4 valve casing 14 houses a tapering rotary valve plug 16 that has an operating handle 17 positioned exteriorly of the rear wallsV of: the compartment 18 and lower tank 7, respectively,l for* ease of opera-tion. The

smaller end of the tapered valve plug 16 is threaded as at 2O to receive securing nuts 21Y .and 22 engaged with the adjacent end of the valvel casing 14 torotatably retain the valve plugl16 in the casing., An axial bore 18 in the rotatable plug16 opening at the reduced 'endrthereof is angularly directed as at 19 toward oneside of the plug for registration with the side opening 15 in thevalve casing.

An elbow pipe 24 has one end extending into thebore18 at the axial yend thereof, the elbow pipe24associated with the valve 14 in the compartment y13 entering an opening in the bottom wall of the compartment'and regis- `tering with the opening in the upper end of dicated by arrowlines in Figure 2, the water in the upper tank 6 flowing through the side opening 15 in the valve casing 14 and angle bore 18-19 in the valve plug 16, and through the elbow pipe 24;Y to the tube section 11, the

-ing unaffected by the presence of these lvalve devices.,v In the event of the presence of a leak in any one of the tube sections 11, or should the same be damaged in any manner resulting in leakage or `stoppage of How, any one of thetube sections may be disconnected from the circuit byclosing the. two valves associated therewith, the cooling medium continuing to low through the other tube sections and performing theiroihce: TheV tubev sections 11 are readily removable for repair and replacement and the automobile maybe operatedV with several'V of the sections removed.

' In theorm of the invention shown iniFig ures 8 .to-,14, the radiator core frame includes upperand lower watertanks 6 and 7 respectively, a water filling spout 8 vbeing carried by the upper tank, as isalso a water inletpipe 9 while the lowertank 7 is provided with al -water inlet pipe 10", the pipes 9 and 10 being in communication with the water vjacket'ot the internal combustion engine. o Y e The upper and lower water tanks6Y and 7 are connectedby a plurality of vertical water tubes 11 individually removable `from the core frame anda valve str'ucture'12 for lcontrolling the flow of water from the upper tank 6 to the lower tank 7 through each water tube 11 is associated with each end of the several tubes and is mounted in a depressed portion or pocket 13 formed in the rear walls of the upperand lower water tanks6 and 7 e respectively.

Each valve'12 includes a side port 14 and an end opening 15. lA hollow tapered rotary valve plug 16 is mounted in each valve casing 12 and yis provided with a threaded end extension 17 upon which is mounted a retaining washerlS and a'nutr19 for-rotatably retaining the valve plug in the casing. The

opposite end of the valve plug 16 is'provided with an operating handle 21 disposed at the open side of the depression ofpocketl to facilitate operation thereof. v The hollow valve plug 16 is provided with diametrically opposite ports 22 adapted to register with corresponding ports 23 formed in the valve casing 12" to form communication between the side and' end ports 14 and 15 respectively. 4

TheV valve casing 12 mounted in the depression or pocket 13 of the upper tank 6 is so disposed to present the end port l5 within the upper tank while the side port 14 communicates with the bottom wall of the tank 6 and in registration with an opening in the upper end of the tube 1l. The valve casing i2 located in the depression or pocket 13 of the lower tank 7 has the end opening 15 communicating with the lower tank 7 and the side port 14 entering an opening in the top wall of the lower tank and registering with an opening in the lower end of the tube 11. Any one of the tubes 1l may be removed froin the circuit by closing the valve plugs 16, and in other respects the operation ot this form of the invention is comparable with the construction disclosed in Figures l to From the above detailed description of the invention, it is believed that the construction and operation thereof will at once be apparent, it being noted that the heat eX- change tubes are so constructed and associated with the radiator frame to permit selective removal thereof so that in event of damage to any tube section, the same may be removed as a unit from the radiator assembly, after closing the valves associated therewith, with the remaining tube sections functioning in the usual manner, continued use of the automobile being possible upon removal of several of the tube sections, the cooling water circulating through the remaining tubes.

While there are herein shown and described the preferred embodiments of the invention, it is to be understood that minor changes may be made therein, such as will fall within the scope of the invention as claimed.

A cooling radiator for automobiles comprising a rectangular casing having an upper water chamber, a valve chamber located immediately'below the same and having a iiat bottom part devoid of connecting bosses and formed with apertures, rotary valves and valve casings located in said valve chamber and communicating with ports leading respectively to the water chamber and to the apertures in the bottom of the valve chamber, a plurality of slidably attachable and detachable water cooling sections located below said valve chamber and communicating with the upper chamber by way of the valve connections, a lower valve chamber, valves located therein and communicating with the cooling sections and with suitable outlets leading to the circulating system.

In testimony whereof I affix my signature.

AMER-ICO DONADIO. 

